• BQ24172: Battery Charger IC Failure

  

  Alexander Nicholas

  TI Thinks Resolved

  Part Number: BQ24172 Other Parts Discussed in Thread: BQ40Z50 I have electrical questions about this battery charge controller BQ24172 We have a charging base with 5 of these controllers that can charge Li-Ion batteries. We are seeing failures in…

  • over 2 years ago
  • Power management
  • Power management forum

• BQ24172: What is the difference between ACFET and RBFET for BQ24172?

  

  yang yang2

  TI Thinks Resolved

  Part Number: BQ24172 Hello, TI expert On BQ24172 datasheet, the typical schematic on page1 ultilize two FETS Q1 and Q2, and so called ACFET and RBFET. But they are sharing the same source and gate pin, so they are both on or off simultaneously. …

  • over 3 years ago
  • Power management
  • Power management forum
Answered

• BQ24172: How to get rid of battery overcharge?

  

  yang yang2

  Resolved

  Part Number: BQ24172 Hello, TI experts BQ24172 plays the role of Li-ION battery mangement in our design. When the battery is full of charge, it seems overcharge may happen sometimes. And the voltage waveform at this time showes in the picture below…

  • Resolved

  • over 2 years ago
  • Power management
  • Power management forum
Answered

• BQ24172:TTC terminal connection

  

  ?? ??

  Resolved

  Part Number: BQ24172 Hello I want to pull up the TTC pin to VREF to disable the safety timer, is it OK to connect it directly to VREF? Thanks and best regards.

  • Resolved

  • over 3 years ago
  • Power management
  • Power management forum
Answered

• BQ24172: BQ24172 + BQ29700

  

  user6503916

  Resolved

  Part Number: BQ24172 Hi TI team, Currently, I use the BQ24172 to design the Battery Charger. My question is whether I need to add the BQ29700 solution to protect the Battery. Thanks Anson

  • Resolved

  • over 5 years ago
  • Power management
  • Power management forum

• BQ24172: REGN_pin low impedance

  

  Tommy Tzeng

  TI Thinks Resolved

  Part Number: BQ24172 Hi Sir, we found that pin_20 REGN seem have low impedance phenomenon, is there any problem with this schematic? what is the reason for the low impedance od REGN pin? dp3m_2a_v01z09_BOM_ES1_0a6_5v_adj.pdf

  • over 3 years ago
  • Power management
  • Power management forum
Answered

• BQ24172: Typical Application Schematic With Single-Cell Unremovable Battery

  

  Masakazu Adachi

  Resolved

  Part Number: BQ24172 Hello team, I received questions from the customer. 1. Is it possible to turn off the Automatic Power Path function? 2. How should Q4 be selected? 3. Is the zener diode on the SW pin optional? Regards, Masa

  • Resolved

  • over 3 years ago
  • Power management
  • Power management forum

• BQ24172: layout issues

  

  morgan nedelec

  TI Thinks Resolved

  Part Number: BQ24172 Hi everyone, We are experiencing some manufacturing issues at our EMS, on a BQ24172RGY: For thermal dissipation the BQ pad is equipped with 15 vias, tented on bottom side. During wave soldering for through hole components, heat…

  • over 3 years ago
  • Power management
  • Power management forum

• BQ24172: Will Rsense affect wake current?

  

  Ruixin Feng

  TI Thinks Resolved

  Part Number: BQ24172 Hi team, In datasheet, the wake current is typically 125mA under the condition of Rsense=10mohm. Since customer want to set the fast charge current to 200mA, they will choose a larger sense resistor like 25mohm or 30mohm. I was…

  • over 3 years ago
  • Power management
  • Power management forum

• BQ24172: Using BQ24172 only to switch between AVCC and VBAT

  

  Jackson Wilson

  TI Thinks Resolved

  Part Number: BQ24172 We may want to use a different charger since this part is failing EMC testing, even after a re-spin with modified layout and stackup. We are testing some additional mitigations from https://e2e.ti.com/support/power-management/f/196…

  • over 5 years ago
  • Power management
  • Power management forum

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